Pacho O'Donnell
| Pacho O'Donnell | |
|---|---|
| Born | Mario Ernesto O'Donnell Ure 28 October 1941 Buenos Aires, Argentina | 
| Occupation | Physician, politician, writer, and historian | 
| Language | Spanish | 
| Period | 1975-2012 | 
| Genre | Historian | 
| Notable works | Rosas, el maldito de la historia oficial | 
| Notable awards | Illustrious citizen of Buenos Aires (2009) | 
| Spouse | Susana Evans Civit | 
| Children | 5 | 
Mario Ernesto O'Donnell Ure (born 28 October 1941), known professionally as "Pacho O'Donnell", is an Argentine writer, politician, historian and physician who specializes in psychoanalysis.